Statistics
45 CBSE Class 11 Mathematics practice questions with answers and worked solutions.
- Difficulty: 10 easy · 28 moderate · 7 hard.
- Most-asked subtopics: Variance and Standard Deviation (23), Mean Deviation for Grouped Data (12), Mean Deviation for Ungrouped Data (7).
- Updated 18 August 2026.
#1Mean Deviation for Ungrouped Data
#2Mean Deviation for Ungrouped Data
#3Mean Deviation for Ungrouped Data
#4Mean Deviation for Grouped Data
#5Mean Deviation for Grouped Data
Done a few? Here’s your next move
#6Mean Deviation for Grouped Data
#7Mean Deviation for Grouped Data
#8Mean Deviation for Ungrouped Data
#9Mean Deviation for Ungrouped Data
#10Mean Deviation for Ungrouped Data
#11Mean Deviation for Ungrouped Data
#12Mean Deviation for Grouped Data
#13Mean Deviation for Grouped Data
#14Mean Deviation for Grouped Data
#15Mean Deviation for Grouped Data
#16Mean Deviation for Grouped Data
#17Mean Deviation for Grouped Data
#18Mean Deviation for Grouped Data
#19Mean Deviation for Grouped Data
#20Variance and Standard Deviation
#21Variance and Standard Deviation
#22Variance and Standard Deviation
#23Variance and Standard Deviation
#24Shortcut Method for Variance and Standard Deviation
#25Variance and Standard Deviation
#26Variance and Standard Deviation
#27Variance and Standard Deviation
#28Variance and Standard Deviation
#29Variance and Standard Deviation
#30Shortcut Method for Variance and Standard Deviation
#31Variance and Standard Deviation
#32Variance and Standard Deviation
#33Shortcut Method for Variance and Standard Deviation
#34Variance and Standard Deviation
#35Variance and Standard Deviation
#36Variance and Standard Deviation
#37Variance and Standard Deviation
#38Variance and Standard Deviation
#39Variance and Standard Deviation
#40Variance and Standard Deviation
#41Variance and Standard Deviation
#42Variance and Standard Deviation
- Set · 2 questionsThe mean and standard deviation of 20 observations are found to be 10 and 2, respectively. On rechecking, it was found that an observation 8 was incorrect. Calculate the correct mean and standard deviation in each of the following cases:
#43Variance and Standard Deviation
#44Variance and Standard Deviation
#45Variance and Standard Deviation
More chapters in this subject
- Binomial Theorem24
- Complex Numbers and Quadratic Equations39
- Conic Sections90
- Introduction to Three Dimensional Geometry29
- Limits and Derivatives126
- Linear Inequalities59
- Permutations and Combinations82
- Probability105
- Relations and Functions76
- Sequences and Series81
- Sets226
- Straight Lines94
- Trigonometric Functions83